Coal-drilling machine



(No Model.)

L. Px MORAN.

CUAL DRILLING MACHINE.

JVEJVTOR Patented May 20, 1884.

- WIQWEM s .Attorney/a:

ihvrrmn @trarne Partnr @marce LEVIS P. MOB-AN, OF HANDLEY, VEST VIRGINIA.

CUL-DRILLENG WlCl-HNE.

SPECIFICATION forming part of Letters Patent No. 298,766, dated May 20, 1884. Application filed February 2, 1884. (No model.)

To ULZ whom, it' may concern:

Be it known that I, LEWIS l?. MORAN, a citizen of the UnitedStates, residing at Handley, in the county of Kanawha and State of` -West Virgina, have invented a new and useful Coal-Drilling Machine, of which the fol lowing is a specification, reference being had to the accompanying drawings.

Figure I is a view in perspective of a drill and drill-frame embodying the improvements of my invention. Figs. 2 and 3 are views showing the drill in different positions in the vein of the mine.

This invention has relation to coal and rock drills; and it consists in the construction and novel arrangement of parts, as will be hereinafter fully described, and particularly pointed out in the claim appended.

Referring by letter to the accompanying drawings, a designates the drill-frame, composed of the perforated side bars, b b, connected at one end by the short bar c, and provided at the other end with a rack-stem, c', which telescopes in a hollow socket-shaft, c1", provided with a 'fish-tail point, c3. A pinion, 0*, on a crank-rod, c5, having bearings in the walls of the socket-shaft ci, engages the teeth of the rack-stem c, and is used to lengthen and shorten the drill-frame, to adjust it to coalveins of different height-s and widths, thereby extending the usefulness of the drill. The short bar c is perforated midway of its length to form the bearing for the bolt d, by which the perforated cross-head e is secured in place. The cross-head e is provided near its ends with threaded holes ff for the passage of the pointed threaded bolt-rods g g, `which penetrate the coal or rock to form the bearing for this end of the drill-,frame when in place in the vein, the fish-tail point forming the other bearing for the frame. A bolt-rod, h, is provided, which is intended to occupy either one of the sets of perforations in the side bars, b b, of the drill-frame. Upon this bolt-redit, outside of the perforated bars b b, are pivoted two hanger-arms, M, having bearings at their lower ends for the reception ofthe journals 7c 7c of the threaded head-block Z, in which the threaded drill-shaft m works. To adj ust the feed-nut or head-blockl up or down in the frame, it is only necessary to remove the nut on one end of the bolt h, withdraw the bolt, and pass it through the eyes of the links and through the desired set of holes in the frame. This can be done with but little loss of time. The drill-shaft m is constructed so that it may be operated'either by a crank, n, or by a ratch et-lever, o. In drilling or boring coal the ratchet-lever 0 is preferably used, but in drilling or boring rock the crank n is used, as it is stronger, and greater force is required in the latter instance, as the rock is harder than the 'coal It will be seen from the construction of the drill-'frame and its extension, and the means for attaching the head-block to the same, that vertical and other adjustments can be made, and that considerable latitude is given to the drill-shaft, so that the tool can be directed to the desired point on the coal or rock surface.

This machine will perform its work efficiently, is cheap and simple in its construction, is easily operated, and is positive in its adjustments.

Perforations have been made in the face of the drill-frame, and the screw-nut has been provided with brackets passing into said peri'orations to form detachable bearings for the screw-nut, asmay be seen in Patent No. 97 ,080, of November 23, 1869; and a nut-frame having cross-plates has been dctachably connected to the drill-frame by a pin passing through one set of a series of perforations in the drillframe, as may be seen by reference to Patent No. 168,817, of October Il, 1875, :and neither of these constructions is claimed herein.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

In a coal-drilling machine, the combination, with the drill-frame composed of the perforated side bars, I) b, connected at one end by the short bar c, and provided at the other end with the 4extension-rack, of the head-block Z, journaled in hangers connected to the driliframe by a bolt, h, and nut, passed through perforations in the hangers and bars b b, and the drill-shaft and lever` for operating it, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

LEVIS I?. MORAN.

'Witnesses N. B. COLEMAN, Josera-r FLrcKnu.

IOO 

